You’re likely missing the TLS updates required to make web based features of Revit work. These have to be put in place due to security issues. Update to a current build and apply all other patches accordingly and you should be all set.

To align with industry best practices for security and data integrity, Autodesk Identity and Cloud Models for Revit Services, will move to Transport Layer Security (TLS) 1.2 and stop supporting TLS 1.0 and TLS 1.1 on August 3, 2019. Action may be...